//
//  CryptoSupport.m
//  myCrypto
//
//  Created by Alximik on 02.07.11.
//  Copyright 2011 __MyCompanyName__. All rights reserved.
//

#import <CommonCrypto/CommonDigest.h>
#import "CryptoSupport.h"

@implementation NSString (CryptoString)

- (NSString *)MD5 {
    const char *cStr = [self UTF8String];
    unsigned char result[16];
    CC_MD5( cStr, strlen(cStr), result);
    return [NSString stringWithFormat:
            @"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
            result[0], result[1], result[2], result[3], 
            result[4], result[5], result[6], result[7],
            result[8], result[9], result[10], result[11],
            result[12], result[13], result[14], result[15]
            ];  
}

-(NSString*)SHA1 {
    NSData *data = [self dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
    uint8_t digest[CC_SHA1_DIGEST_LENGTH];
    CC_SHA1(data.bytes, data.length, digest);
    NSMutableString* output = [NSMutableString stringWithCapacity:CC_SHA1_DIGEST_LENGTH * 2];
    
    for(int i = 0; i < CC_SHA1_DIGEST_LENGTH; i++)
        [output appendFormat:@"%02x", digest[i]];
    
    return output;
}

@end



